【摘要】 东北黑土区是我国主要的商品粮生产基地，是保障国家粮食安全的“稳压器”和“压舱石”。但是，长期掠夺式开发导致黑土严重退化。以秸秆覆盖少免耕技术为核心的“梨树模式”为黑土地保护提供了重要途径，为我国耕地质量提升和农业高质量发展提供了技术支撑。更多还原

【Abstract】 Long-term predatory development has resulted in serious degradation of black soil and threatened national food security. Lishu model, characterized by straw mulching and no-tillage technology, provides an important example for the protection of black soil, the improvement of the quality of cultivated land and the highquality development of agriculture in China.更多还原